/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1");

/**** 
* Classes
****/ 
var Building = Container.expand(function () {
	var self = Container.call(this);
	var buildingGraphics = self.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 0
	});
	// Randomize building properties
	var shade = Math.floor(Math.random() * 40) + 40;
	buildingGraphics.tint = shade << 16 | shade << 8 | shade;
	buildingGraphics.height = Math.random() * 600 + 400;
	buildingGraphics.width = Math.random() * 100 + 100;
	// Add windows to buildings for a city look
	var windowCount = Math.floor(buildingGraphics.height / 80);
	var windowsPerRow = Math.floor(buildingGraphics.width / 40);
	for (var i = 0; i < windowCount; i++) {
		for (var j = 0; j < windowsPerRow; j++) {
			var windowLight = self.addChild(new Container());
			var windowAsset = windowLight.attachAsset('building', {
				anchorX: 0.5,
				anchorY: 0.5,
				width: 20,
				height: 30,
				tint: 0xFFFF99
			});
			windowLight.x = j * 40 - buildingGraphics.width / 2 + 25;
			windowLight.y = i * 80 + 50;
			// Randomly light windows
			windowLight.alpha = Math.random() > 0.3 ? 0.8 : 0;
		}
	}
	self.speed = 10; // Default speed
	self.update = function () {
		self.y += self.speed;
		// Reset building when it goes off screen
		if (self.y > 2732 + buildingGraphics.height) {
			self.y = -buildingGraphics.height;
			// Determine road boundaries to keep buildings off the road
			var road = null;
			for (var i = 0; i < game.children.length; i++) {
				if (game.children[i].asset && game.children[i].asset.id === 'road') {
					road = game.children[i];
					break;
				}
			}
			// Place building only on sidewalks
			var roadLeftEdge = road ? (2048 - road.width) / 2 : 424;
			var roadRightEdge = road ? 2048 - (2048 - road.width) / 2 : 1624;
			// Determine which side to place the building on based on its current side
			if (self.x < roadLeftEdge) {
				// Keep on left side
				self.x = Math.random() * (roadLeftEdge - buildingGraphics.width / 2);
			} else {
				// Keep on right side
				self.x = roadRightEdge + Math.random() * (roadLeftEdge - buildingGraphics.width / 2);
			}
			var shade = Math.floor(Math.random() * 40) + 40;
			buildingGraphics.tint = shade << 16 | shade << 8 | shade;
			buildingGraphics.height = Math.random() * 600 + 400;
			buildingGraphics.width = Math.random() * 100 + 100;
			// Recreate windows when building resets
			self.removeChildren(1); // Keep only the main building graphic
			var windowCount = Math.floor(buildingGraphics.height / 80);
			var windowsPerRow = Math.floor(buildingGraphics.width / 40);
			for (var i = 0; i < windowCount; i++) {
				for (var j = 0; j < windowsPerRow; j++) {
					var windowLight = self.addChild(new Container());
					var windowAsset = windowLight.attachAsset('building', {
						anchorX: 0.5,
						anchorY: 0.5,
						width: 20,
						height: 30,
						tint: 0xFFFF99
					});
					windowLight.x = j * 40 - buildingGraphics.width / 2 + 25;
					windowLight.y = i * 80 + 50;
					// Randomly light windows
					windowLight.alpha = Math.random() > 0.3 ? 0.8 : 0;
				}
			}
		}
	};
	return self;
});
var Car = Container.expand(function () {
	var self = Container.call(this);
	// Create car body
	var carGraphics = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x3366CC // Blue car color
	});
	// Add car windows
	var carWindshield = self.addChild(new Container());
	var windshieldAsset = carWindshield.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 140,
		height: 80,
		tint: 0xCCEEFF
	});
	carWindshield.y = -80;
	// Add headlights
	var leftHeadlight = self.addChild(new Container());
	var leftHeadlightAsset = leftHeadlight.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 40,
		height: 40,
		tint: 0xFFFFAA
	});
	leftHeadlight.x = -60;
	leftHeadlight.y = -140;
	var rightHeadlight = self.addChild(new Container());
	var rightHeadlightAsset = rightHeadlight.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 40,
		height: 40,
		tint: 0xFFFFAA
	});
	rightHeadlight.x = 60;
	rightHeadlight.y = -140;
	self.jumping = false;
	self.jumpHeight = 100;
	self.originalY = 0;
	self.lastY = 0; // Track last Y position for intersection detection
	self.jump = function () {
		if (self.jumping) {
			return;
		}
		self.jumping = true;
		self.originalY = self.y;
		// Play jump sound
		LK.getSound('jump').play();
		// Jump animation using tween
		tween(self, {
			y: self.y - self.jumpHeight
		}, {
			duration: 300,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				// Fall back down
				tween(self, {
					y: self.originalY
				}, {
					duration: 300,
					easing: tween.easeIn,
					onFinish: function onFinish() {
						self.jumping = false;
					}
				});
			}
		});
	};
	self.down = function () {
		self.jump();
	};
	self.update = function () {
		self.lastY = self.y;
		// Create headlight glow effect
		if (LK.ticks % 5 === 0) {
			leftHeadlightAsset.alpha = 0.7 + Math.random() * 0.3;
			rightHeadlightAsset.alpha = 0.7 + Math.random() * 0.3;
		}
	};
	return self;
});
var Line = Container.expand(function () {
	var self = Container.call(this);
	// Create road line marking
	var lineGraphics = self.attachAsset('line', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Make line vertical
	lineGraphics.rotation = Math.PI / 2; // Rotate 90 degrees
	// Road lines have fixed width to better match car size
	lineGraphics.width = 400; // Line length (now vertical)
	lineGraphics.height = 60; // Line thickness (more visible)
	self.lastY = 0; // Track last Y position for intersection detection
	self.speed = 15; // Default speed
	self.active = true; // Whether the line is active for scoring
	self.scored = false; // Whether this line has been scored already
	// Add visual effect to make lines more prominent
	var glowEffect = self.addChild(new Container());
	var glowAsset = glowEffect.attachAsset('line', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: lineGraphics.width + 20,
		height: lineGraphics.height + 20,
		tint: 0xFFFF00,
		alpha: 0.3
	});
	glowAsset.rotation = Math.PI / 2;
	self.update = function () {
		self.lastY = self.y; // Store last position for collision detection
		self.y += self.speed;
		// Pulse glow effect
		if (LK.ticks % 10 === 0) {
			glowAsset.alpha = 0.2 + Math.random() * 0.2;
		}
		// Remove when off screen
		if (self.y > 2732 + lineGraphics.width / 2) {
			self.active = false;
		}
	};
	return self;
});
var ScoreEffect = Container.expand(function () {
	var self = Container.call(this);
	var effectGraphics = self.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8
	});
	self.show = function (x, y, isPositive) {
		self.x = x;
		self.y = y;
		if (!isPositive) {
			effectGraphics.tint = 0xFF0000;
			// Play penalty sound
			LK.getSound('penalty').play();
		} else {
			effectGraphics.tint = 0x00FF00;
			// Play point sound
			LK.getSound('point').play();
		}
		// Animation for the effect
		tween(self, {
			alpha: 0,
			y: y - 100
		}, {
			duration: 800,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.alpha = 1;
				self.visible = false;
			}
		});
		self.visible = true;
	};
	return self;
});
var Store = Container.expand(function () {
	var self = Container.call(this);
	// Create store building
	var storeGraphics = self.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 0,
		width: 200,
		height: 250,
		tint: 0xFAE5D3 // Light beige for store
	});
	// Add store sign
	var storeSign = self.addChild(new Container());
	var storeSignAsset = storeSign.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 180,
		height: 60,
		tint: 0x3498DB // Blue for store sign
	});
	storeSign.y = 40;
	// Add store window
	var storeWindow = self.addChild(new Container());
	var storeWindowAsset = storeWindow.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 120,
		height: 100,
		tint: 0xD6EAF8 // Light blue for window
	});
	storeWindow.y = 120;
	// Add store door
	var storeDoor = self.addChild(new Container());
	var storeDoorAsset = storeDoor.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 60,
		height: 100,
		tint: 0x784212 // Brown for door
	});
	storeDoor.y = 180;
	self.speed = 10; // Default speed
	self.update = function () {
		self.y += self.speed;
		// Reset store when it goes off screen
		if (self.y > 2732 + storeGraphics.height) {
			self.y = -storeGraphics.height;
			// Randomize store appearance
			var storeTypes = [{
				building: 0xFAE5D3,
				sign: 0x3498DB,
				window: 0xD6EAF8
			},
			// Blue store
			{
				building: 0xFCF3CF,
				sign: 0xE74C3C,
				window: 0xFADBD8
			},
			// Red store
			{
				building: 0xD5F5E3,
				sign: 0x8E44AD,
				window: 0xEBDEF0
			},
			// Purple store
			{
				building: 0xEAEDED,
				sign: 0xF39C12,
				window: 0xFAE5D3
			} // Orange store
			];
			var type = storeTypes[Math.floor(Math.random() * storeTypes.length)];
			storeGraphics.tint = type.building;
			storeSignAsset.tint = type.sign;
			storeWindowAsset.tint = type.window;
			// Vary store size slightly
			var sizeVar = 0.8 + Math.random() * 0.4;
			storeGraphics.width = 200 * sizeVar;
			storeGraphics.height = 250 * sizeVar;
			storeSign.scale.set(sizeVar);
			storeWindow.scale.set(sizeVar);
			storeDoor.scale.set(sizeVar);
			// Adjust positions based on new size
			storeSign.y = 40 * sizeVar;
			storeWindow.y = 120 * sizeVar;
			storeDoor.y = 180 * sizeVar;
		}
	};
	return self;
});
var StreetLight = Container.expand(function () {
	var self = Container.call(this);
	// Create pole
	var pole = self.addChild(new Container());
	var poleAsset = pole.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 1.0,
		width: 20,
		height: 200,
		tint: 0x555555 // Dark gray for pole
	});
	// Create light
	var light = self.addChild(new Container());
	var lightAsset = light.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 40,
		height: 40,
		tint: 0xFFFF99 // Yellow light
	});
	light.y = -200;
	// Light arm
	var arm = self.addChild(new Container());
	var armAsset = arm.attachAsset('building', {
		anchorX: 0,
		anchorY: 0.5,
		width: 40,
		height: 10,
		tint: 0x555555 // Dark gray for arm
	});
	arm.y = -190;
	self.speed = 10; // Default speed
	self.isLit = Math.random() > 0.2; // Most lights are on
	self.update = function () {
		self.y += self.speed;
		// Make light flicker occasionally
		if (self.isLit && LK.ticks % 20 === 0 && Math.random() > 0.7) {
			lightAsset.alpha = 0.6 + Math.random() * 0.4;
		}
		// Reset light when it goes off screen
		if (self.y > 2732 + 200) {
			self.y = -200;
			self.isLit = Math.random() > 0.2;
			lightAsset.alpha = self.isLit ? 1 : 0.2;
		}
	};
	return self;
});
var TapEffect = Container.expand(function () {
	var self = Container.call(this);
	var effectGraphics = self.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 300,
		height: 300,
		alpha: 0.6
	});
	self.show = function (x, y, isPositive) {
		self.x = x;
		self.y = y;
		// Set color based on whether it's a positive or negative tap
		if (isPositive) {
			effectGraphics.tint = 0x00FF00; // Green for good taps
			// Play point sound with lower volume to avoid overwhelming
			LK.getSound('point').play({
				volume: 0.3
			});
		} else {
			effectGraphics.tint = 0xFF0000; // Red for bad taps
			// Play penalty sound with lower volume to avoid overwhelming
			LK.getSound('penalty').play({
				volume: 0.3
			});
		}
		// Reset properties before animation
		self.alpha = 1;
		effectGraphics.alpha = 0.6;
		effectGraphics.scale.x = 0.5;
		effectGraphics.scale.y = 0.5;
		self.visible = true;
		// Animate the effect - expand and fade out for a nice ripple effect
		tween(effectGraphics, {
			alpha: 0,
			scaleX: 2.5,
			scaleY: 2.5
		}, {
			duration: 800,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.visible = false;
				effectGraphics.scale.x = 0.5;
				effectGraphics.scale.y = 0.5;
			}
		});
	};
	return self;
});
var Tree = Container.expand(function () {
	var self = Container.call(this);
	// Create tree trunk
	var trunk = self.addChild(new Container());
	var trunkAsset = trunk.attachAsset('building', {
		anchorX: 0.5,
		anchorY: 1.0,
		width: 40,
		height: 120,
		tint: 0x8B4513 // Brown color for trunk
	});
	// Create tree foliage (multiple layers for depth)
	var foliage1 = self.addChild(new Container());
	var foliageAsset1 = foliage1.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.8,
		width: 150,
		height: 150,
		tint: 0x228B22 // Forest green
	});
	foliage1.y = -80;
	var foliage2 = self.addChild(new Container());
	var foliageAsset2 = foliage2.attachAsset('scoreEffect', {
		anchorX: 0.5,
		anchorY: 0.7,
		width: 120,
		height: 120,
		tint: 0x32CD32 // Lime green for highlight
	});
	foliage2.y = -100;
	self.speed = 10; // Default speed
	self.update = function () {
		self.y += self.speed;
		// Reset tree when it goes off screen
		if (self.y > 2732 + 150) {
			self.y = -150;
			// Randomize tree appearance when resetting
			trunkAsset.height = 80 + Math.random() * 80;
			trunkAsset.width = 30 + Math.random() * 20;
			var scale = 0.8 + Math.random() * 0.5;
			foliage1.scale.set(scale);
			foliage2.scale.set(scale * 0.9);
			// Slightly vary green shades
			var greenVariation = Math.floor(Math.random() * 40);
			foliageAsset1.tint = 34 + greenVariation << 16 | 139 + greenVariation << 8 | 34;
			foliageAsset2.tint = 50 + greenVariation << 16 | 205 + greenVariation << 8 | 50;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game variables
var car;
var lines = [];
var buildings = [];
var trees = [];
var stores = [];
var streetLights = [];
var score = 0;
var scoreText;
var speedMultiplier = 1;
var lineSpawnRate = 60; // Frames between line spawns
var difficulty = 1;
var isGameActive = true;
var scoreEffects = [];
var tapEffects = [];
var effectIndex = 0;
var tapEffectIndex = 0;
var lastJumpScore = 0;
// Create a sky background
game.setBackgroundColor(0x87CEEB); // Light blue sky
// Initialize the road
var road = game.addChild(LK.getAsset('road', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2,
	width: 1200,
	// Make the road narrower than the full width
	tint: 0x444444 // Darker gray for asphalt
}));
// Add road edges/sidewalks
var leftSidewalk = game.addChild(LK.getAsset('building', {
	anchorX: 0,
	anchorY: 0.5,
	width: (2048 - road.width) / 2,
	height: 2732,
	x: 0,
	y: 2732 / 2,
	tint: 0x999999 // Light gray for sidewalk
}));
var rightSidewalk = game.addChild(LK.getAsset('building', {
	anchorX: 1,
	anchorY: 0.5,
	width: (2048 - road.width) / 2,
	height: 2732,
	x: 2048,
	y: 2732 / 2,
	tint: 0x999999 // Light gray for sidewalk
}));
// Initialize score display
scoreText = new Text2('SCORE: 0', {
	size: 80,
	fill: 0xFFFFFF,
	stroke: 0x000000,
	strokeThickness: 5
});
scoreText.anchor.set(0.5, 0);
scoreText.y = 50; // Move down slightly from top
LK.gui.top.addChild(scoreText);
// Add game instructions
var instructionsText = new Text2('Tap when no lines\nAvoid tapping on lines\nScore 1000 to win', {
	size: 80,
	fill: 0xFFFFFF,
	stroke: 0x800080,
	strokeThickness: 10,
	fontWeight: 'bold',
	align: 'center'
});
instructionsText.anchor.set(0.5, 0);
instructionsText.y = 150;
LK.gui.top.addChild(instructionsText);
// Create buildings for city skyline on both sides of the road (not on the road)
for (var i = 0; i < 20; i++) {
	var building = new Building();
	// Position buildings only on the sides, ensuring they stay off the road
	var roadLeftEdge = (2048 - road.width) / 2;
	var roadRightEdge = 2048 - roadLeftEdge;
	if (i % 2 === 0) {
		// Left side only - ensure buildings stay completely on sidewalk
		var buildingWidth = building.children[0].width;
		building.x = Math.random() * (roadLeftEdge - buildingWidth / 2); // Left side only, accounting for building width
	} else {
		// Right side only - ensure buildings stay completely on sidewalk
		var buildingWidth = building.children[0].width;
		building.x = roadRightEdge + Math.random() * (roadLeftEdge - buildingWidth / 2); // Right side only
	}
	building.y = Math.random() * 2732;
	buildings.push(building);
	game.addChild(building);
}
// Add trees along the road
var trees = [];
for (var i = 0; i < 15; i++) {
	var tree = new Tree();
	// Position trees on the sidewalks
	if (i % 2 === 0) {
		// Left side trees - closer to road
		tree.x = (2048 - road.width) / 2 - 80 - Math.random() * 60;
	} else {
		// Right side trees - closer to road
		tree.x = 2048 - (2048 - road.width) / 2 + 80 + Math.random() * 60;
	}
	// Distribute trees along the road
	tree.y = -150 + i * 350 + Math.random() * 200;
	trees.push(tree);
	game.addChild(tree);
}
// Add stores on the sides
var stores = [];
for (var i = 0; i < 8; i++) {
	var store = new Store();
	// Position stores on the sidewalks, further from the road than trees
	if (i % 2 === 0) {
		// Left side stores
		store.x = (2048 - road.width) / 4;
	} else {
		// Right side stores
		store.x = 2048 - (2048 - road.width) / 4;
	}
	// Distribute stores along the road with some spacing
	store.y = -300 + i * 650 + Math.random() * 300;
	stores.push(store);
	game.addChild(store);
}
// Add street lights
var streetLights = [];
for (var i = 0; i < 12; i++) {
	var light = new StreetLight();
	// Position lights on the edge of the road
	if (i % 2 === 0) {
		// Left side lights
		light.x = (2048 - road.width) / 2 - 20;
	} else {
		// Right side lights
		light.x = 2048 - (2048 - road.width) / 2 + 20;
	}
	// Distribute lights evenly
	light.y = -200 + i * 400 + i % 2 * 200;
	streetLights.push(light);
	game.addChild(light);
}
// Create car
car = new Car();
car.x = 2048 / 2;
car.y = 2732 - 400;
game.addChild(car);
// Bring car to front to make sure it appears on top of lines
game.setChildIndex(car, game.children.length - 1);
// Create score effects pool
for (var i = 0; i < 5; i++) {
	var effect = new ScoreEffect();
	effect.visible = false;
	scoreEffects.push(effect);
	game.addChild(effect);
}
// Create tap effects pool - increased size to handle multiple effects
for (var i = 0; i < 10; i++) {
	var tapEffect = new TapEffect();
	tapEffect.visible = false;
	tapEffects.push(tapEffect);
	game.addChild(tapEffect);
}
// Game click handler
game.down = function (x, y, obj) {
	if (!isGameActive) {
		return;
	}
	// Check if car is already jumping
	if (!car.jumping) {
		car.jump();
		// Check if car is over a road line
		var overLine = false;
		for (var i = 0; i < lines.length; i++) {
			// Check if the car intersects with any vertical road line
			if (lines[i].active && car.intersects(lines[i])) {
				overLine = true;
				break;
			}
		}
		// Score or penalty based on jump
		if (overLine) {
			// Penalty for jumping over a line
			score = Math.max(0, score - 10);
			// Show penalty effect
			var effect = scoreEffects[effectIndex];
			effectIndex = (effectIndex + 1) % scoreEffects.length;
			effect.show(car.x, car.y - 50, false);
			// Show tap feedback effect (red for penalty)
			var tapEffect = tapEffects[tapEffectIndex];
			tapEffectIndex = (tapEffectIndex + 1) % tapEffects.length;
			tapEffect.show(x, y, false);
			// Add multiple red effects for stronger visual feedback
			for (var j = 0; j < 2; j++) {
				var extraEffect = tapEffects[tapEffectIndex];
				tapEffectIndex = (tapEffectIndex + 1) % tapEffects.length;
				extraEffect.show(x + (Math.random() * 100 - 50), y + (Math.random() * 100 - 50), false);
			}
			// Flash screen red for bad tap
			LK.effects.flashScreen(0xff0000, 300);
		} else {
			// Points for jumping on empty road
			var pointsGained = 20 * difficulty;
			score += pointsGained;
			lastJumpScore = pointsGained;
			// Show score effect
			var effect = scoreEffects[effectIndex];
			effectIndex = (effectIndex + 1) % scoreEffects.length;
			effect.show(car.x, car.y - 50, true);
			// Show tap feedback effect (green for points)
			var tapEffect = tapEffects[tapEffectIndex];
			tapEffectIndex = (tapEffectIndex + 1) % tapEffects.length;
			tapEffect.show(x, y, true);
			// Add multiple green effects for stronger visual feedback
			for (var j = 0; j < 2; j++) {
				var extraEffect = tapEffects[tapEffectIndex];
				tapEffectIndex = (tapEffectIndex + 1) % tapEffects.length;
				extraEffect.show(x + (Math.random() * 100 - 50), y + (Math.random() * 100 - 50), true);
			}
		}
		// Update score display
		scoreText.setText(Math.round(score));
		LK.setScore(Math.round(score));
	}
};
// Start background music
LK.playMusic('bgmusic', {
	fade: {
		start: 0,
		end: 0.4,
		duration: 1000
	}
});
// Game update function
game.update = function () {
	if (!isGameActive) {
		return;
	}
	// Update car
	car.update();
	// Update all lines
	for (var i = lines.length - 1; i >= 0; i--) {
		lines[i].update();
		// We don't penalize for just passing over a line anymore
		// Only interactions happen when player taps
		if (!lines[i].scored && lines[i].lastY < car.y && lines[i].y >= car.y) {
			lines[i].scored = true; // Mark as scored
		}
		// Remove inactive lines
		if (!lines[i].active) {
			lines[i].destroy();
			lines.splice(i, 1);
		}
	}
	// Update all buildings
	for (var i = 0; i < buildings.length; i++) {
		buildings[i].speed = 5 * speedMultiplier;
		buildings[i].update();
	}
	// Update all trees
	for (var i = 0; i < trees.length; i++) {
		trees[i].speed = 7 * speedMultiplier;
		trees[i].update();
	}
	// Update all stores
	for (var i = 0; i < stores.length; i++) {
		stores[i].speed = 5 * speedMultiplier;
		stores[i].update();
	}
	// Update all street lights
	for (var i = 0; i < streetLights.length; i++) {
		streetLights[i].speed = 7 * speedMultiplier;
		streetLights[i].update();
	}
	// Create new lines at intervals - always come from center of the screen
	if (LK.ticks % Math.floor(lineSpawnRate / speedMultiplier) === 0) {
		var line = new Line();
		// Position line at the center of the screen
		line.x = 2048 / 2; // Center X coordinate
		line.y = -50;
		line.speed = 15 * speedMultiplier;
		lines.push(line);
		game.addChild(line);
		// Ensure car is always rendered on top of lines
		game.setChildIndex(car, game.children.length - 1);
	}
	// Increase difficulty over time
	if (LK.ticks % 600 === 0) {
		// Every 10 seconds
		difficulty += 0.1;
		// Speed up game after 500 points, but not too much, and slow down a bit after 800
		if (score > 800) {
			speedMultiplier = 1 + (difficulty - 1) * 1.0; // Reduced speed multiplier after 800 points
			lineSpawnRate = Math.max(15, 40 - difficulty * 3); // Reduced line spawn rate
		} else if (score > 500) {
			speedMultiplier = 1 + (difficulty - 1) * 1.1; // Moderate speed increase after 500 points
			lineSpawnRate = Math.max(12, 40 - difficulty * 4); // Moderate increase in line spawn rate
		} else {
			speedMultiplier = 1 + (difficulty - 1) * 0.5;
			lineSpawnRate = Math.max(15, 60 - difficulty * 5);
		}
	}
	// Check for game over condition
	if (score < 0) {
		isGameActive = false;
		LK.showGameOver();
	}
	// Check for win condition (1000 points to win)
	if (score >= 1000) {
		isGameActive = false;
		LK.showYouWin();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -786,15 +786,15 @@
 	// Increase difficulty over time
 	if (LK.ticks % 600 === 0) {
 		// Every 10 seconds
 		difficulty += 0.1;
-		// Speed up game significantly after 500 points, but slow down a bit after 800
+		// Speed up game after 500 points, but not too much, and slow down a bit after 800
 		if (score > 800) {
-			speedMultiplier = 1 + (difficulty - 1) * 1.2; // Slightly reduced speed multiplier after 800 points
-			lineSpawnRate = Math.max(12, 40 - difficulty * 4); // Slightly reduced line spawn rate
+			speedMultiplier = 1 + (difficulty - 1) * 1.0; // Reduced speed multiplier after 800 points
+			lineSpawnRate = Math.max(15, 40 - difficulty * 3); // Reduced line spawn rate
 		} else if (score > 500) {
-			speedMultiplier = 1 + (difficulty - 1) * 1.5; // Increase speed multiplier by 3x after 500 points
-			lineSpawnRate = Math.max(10, 40 - difficulty * 5); // Make lines spawn even faster
+			speedMultiplier = 1 + (difficulty - 1) * 1.1; // Moderate speed increase after 500 points
+			lineSpawnRate = Math.max(12, 40 - difficulty * 4); // Moderate increase in line spawn rate
 		} else {
 			speedMultiplier = 1 + (difficulty - 1) * 0.5;
 			lineSpawnRate = Math.max(15, 60 - difficulty * 5);
 		}